G-RSM benchmark test

1. MPI Wall Clock Time comparison on IBM-SP Datastar (SDSC)

GSM (T62L28 72-hr), 192*94=18048 grid cells

	64CPUs	128CPUs	256CPUs
psplit	22.0sec	19.0sec	23.4sec

GSM (T248L28 72-hr)

	64CPUs	128CPUs	256CPUs
psplit	177.8 sec

RSM (128x199 10km 12-hour) 128*199=25472 grid cells

	128CPUs	256CPUs
psplit	93.1sec	72.8sec

RSM (512x335 10km 6-hour) 512*335=171520 grid cells

	512CPUs	1024CPUs
psplit	181.9sec	338.5sec

Ratio of the number of computational operations between RSM and GSM:
25472/18048x1800/30=1.411x60=85

Ratio of computation time from above table:
91.4 *6 / 19 = 29

This means RSM is 3 times more efficient???

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2. MPI Wall Clock Time comparison on COMPAS Linux cluster (SIO)

RSM (128x199 10km 12-hour) 128*199=25472 grid cells

	12-hr	24-hr	36-hr	48-hr
psplit_54	473.8	475.1	458.6	468.5

(roughly 2 times slower than IBM-SP)

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3. MPI Wall Clock Time comparison on IBM-SP Bluesky (NCAR)

RSM (160x199 10km)

pspl_128: 216 sec/12-hour

Compare to 116.25sec on Datastar (SDSC).

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See more comparison:

4. GSM MPI Wall Clock Time Comparison on COMPAS Linux cluster (SIO) - older processors.
5. RSM on IBM Power 4 graphs.
6. RSM on IBM machines at NCAR.